Marine horn



FIG. 1 is a top, front, and right side perspective view of a marine horn showing my new design;

FIG. 2 is a top plan view thereof on an enlarged scale;

FIG. 3 is a front elevational view thereof on an enlarged scale;

FIG. 4 is a left side elevational view thereof on an enlarged scale, the right side being a mirror image;

FIG. 5 is a bottom plan view thereof on an enlarged scale;

FIG. 6 is a rear elevational view thereof on an enlarged scale. 

The ornamental design for marine horn, as shown and described. 